Polymerization is a reaction process in which monomers synthesize polymers. The polymerization reaction involving two monomers is called copolymerization.
This is like the process of love between a man and a woman.
Copolymerization is divided into two types: chain polymerization and step polymerization.
The heat of chain polymerization is relatively large, so the polymerization temperature is high, and it is an irreversible reaction at normal polymerization temperatures. The chain growth activity of chain polymerization is very small, so as long as the initiator generates free radicals, chain growth proceeds rapidly, and long-chain polymers can be formed in about 1 second.
This is just like a man and a woman who are cautious about love. Once they identify each other, they will burn fiercely for love and entangle each other in the name of love. They will never be able to return to the original point for the rest of their lives.
The heat of stepwise polymerization is smaller, so the polymerization temperature is lower, and it is a reversible reaction at general polymerization temperatures; the chain growth activity of stepwise polymerization is larger, so polymerization must be at high temperatures, and a catalyst is required to lower the reaction temperature and react under high vacuum to remove as much small molecule by-products as possible.
This is just like men and women who are careless about love. They can always fall in love easily and separate easily. Only under the pressure of various external factors, they have no choice but to use a piece of paper to trap their hearts that were tired from love.